body{
    margin: 0px;
    padding: 0px;
    background-repeat: no-repeat;
    -webkit-animation: color-change-2x 2s linear infinite alternate both;
    animation: color-change-2x 2s linear infinite alternate both;
}
.bigBox{
    margin: 0 auto;
    margin-top: 200px;
    padding: 20px 50px;
    background: #005aa7;
    background: -webkit-linear-gradient(to right, #005aa7, #fffde4); 
    background: linear-gradient(to right, #005aa7, #fffde4);
    width: 400px;
    height: 300px;
    border-radius: 10px;
    text-align: center;
}
.bigBox h1{
    color: white; 
}
.bigBox .inputBox{
    margin-top: 50px;
}
.bigBox .inputBox .inputText{
    margin-top: 20px;
}
.bigBox .inputBox .inputText input{
    /* 约束文本框大小 */
    box-sizing: border-box;
    border: 0;
    padding: 10px 10px;
    border-bottom: 1px solid #fffde4;
    background-color: #005aa7;
    color: white;
    outline: none;
}
.bigBox .inputBox .inputButton{
    border: 0;
    width: 150px;
    height: 25px;
}
@-webkit-keyframes color-change-2x {
  0% {
    background: #19dcea;
  }
  100% {
    background: #b22cff;
  }
}
@keyframes color-change-2x {
  0% {
    background: #19dcea;
  }
  100% {
    background: #b22cff;
  }
}

